Enrico Borrelli1,2,3, Akihito Uji1,2, David Sarraf4,5, SriniVas R Sadda1,2. 1. Doheny Image Reading Center, Doheny Eye Institute, Los Angeles, California, United States. 2. Department of Ophthalmology, David Geffen School of Medicine at UCLA, Los Angeles, California, United States. 3. Ophthalmology Clinic, Department of Medicine and Science of Ageing, University G. D'Annunzio Chieti-Pescara, Chieti, Italy. 4. Retinal Disorders and Ophthalmic Genetics Division, Stein Eye Institute, David Geffen School of Medicine at UCLA, Los Angeles, California, United States. 5. Greater Los Angeles VA Healthcare Center, Los Angeles, California, United States.
Abstract
Purpose: The purpose of this study was to compare the choriocapillaris plexus in eyes with intermediate AMD (iAMD), with or without neovascular AMD in the fellow eye, using optical coherence tomography angiography (OCTA). Methods: We collected data from 42 eyes with iAMD from 42 patients who had obtained OCTA. This cohort was divided into two subgroups according to the status of the fellow eye, yielding a group of 20 cases with bilateral intermediate AMD (bilateral iAMD group) and 22 cases with neovascular AMD in the fellow eye (unilateral iAMD group). An additional control group of 20 eyes from 20 healthy subjects was included for comparison. Main outcome measures were: (1) the percent of nondetectable perfused choriocapillaris area and (2) the average choriocapillaris signal void size. Results: No differences in the percent of nondetectable perfused choriocapillaris area were found among the three groups (2.3 ± 1.4% in the unilateral iAMD group, 1.5 ± 0.9% in the bilateral iAMD group, and 1.7 ± 1.4% in the control group, respectively). The average choriocapillaris signal void size, however, was significantly increased in unilateral iAMD eyes (293.7 ± 71.2 μm2) compared to both bilateral iAMD (241.5 ± 51.6 μm2, P = 0.031) and control (212.7 ± 48.6 μm2, P = 0.001) eyes. Conclusions: Intermediate AMD eyes of patients with neovascular AMD in the fellow eye have an increased average choriocapillaris signal void size compared to eyes without neovascular AMD in the fellow eye. If replicated in future studies, choriocapillaris signal void size may prove to be a useful parameter for evaluating eyes with AMD.
Purpose: The purpose of this study was to compare the choriocapillaris plexus in eyes with intermediate AMD (iAMD), with or without neovascular AMD in the fellow eye, using optical coherence tomography angiography (OCTA). Methods: We collected data from 42 eyes with iAMD from 42 patients who had obtained OCTA. This cohort was divided into two subgroups according to the status of the fellow eye, yielding a group of 20 cases with bilateral intermediate AMD (bilateral iAMD group) and 22 cases with neovascular AMD in the fellow eye (unilateral iAMD group). An additional control group of 20 eyes from 20 healthy subjects was included for comparison. Main outcome measures were: (1) the percent of nondetectable perfused choriocapillaris area and (2) the average choriocapillaris signal void size. Results: No differences in the percent of nondetectable perfused choriocapillaris area were found among the three groups (2.3 ± 1.4% in the unilateral iAMD group, 1.5 ± 0.9% in the bilateral iAMD group, and 1.7 ± 1.4% in the control group, respectively). The average choriocapillaris signal void size, however, was significantly increased in unilateral iAMD eyes (293.7 ± 71.2 μm2) compared to both bilateral iAMD (241.5 ± 51.6 μm2, P = 0.031) and control (212.7 ± 48.6 μm2, P = 0.001) eyes. Conclusions: Intermediate AMD eyes of patients with neovascular AMD in the fellow eye have an increased average choriocapillaris signal void size compared to eyes without neovascular AMD in the fellow eye. If replicated in future studies, choriocapillaris signal void size may prove to be a useful parameter for evaluating eyes with AMD.
Authors: Yingying Shi; Qinqin Zhang; Fang Zheng; Jonathan F Russell; Elie H Motulsky; James T Banta; Zhongdi Chu; Hao Zhou; Nimesh A Patel; Luis de Sisternes; Mary K Durbin; William Feuer; Giovanni Gregori; Ruikang K Wang; Philip J Rosenfeld Journal: Am J Ophthalmol Date: 2019-09-25 Impact factor: 5.258
Authors: Yingying Shi; Zhongdi Chu; Liang Wang; Qinqin Zhang; William Feuer; Luis de Sisternes; Mary K Durbin; Giovanni Gregori; Ruikang K Wang; Philip J Rosenfeld Journal: Am J Ophthalmol Date: 2020-07-02 Impact factor: 5.258
Authors: Fang Zheng; Qinqin Zhang; Yingying Shi; Jonathan F Russell; Elie H Motulsky; James T Banta; Zhongdi Chu; Hao Zhou; Nimesh A Patel; Luis de Sisternes; Mary K Durbin; William Feuer; Giovanni Gregori; Ruikang Wang; Philip J Rosenfeld Journal: Am J Ophthalmol Date: 2019-01-09 Impact factor: 5.258